Unable to boot the simulator
Question
I'm new in development for iOS. My problem was when I run my project, the simulator was with black screen and a message shows "Unable to boot the simulator". I'm working with Xcode version 7.3.1.
5 answers
solution1
3 2017-04-07 08:18:53
Change the tmp folder permission will solve the problem
Open terminal -> chmod 777 tmp
solution2
1 2018-10-25 23:56:04
I got this issue today (Oct 25, 2018) while working on a computer with a Mojave 10.14.0 beta, which I believed has "expired".
Everything in the system worked well, except for the simulators. I couldn't launch any of them (iOS, tvOS...).
Upgrading the OS to 10.14 (final version) solved the issue.
solution3
0 2016-10-07 11:13:38
Try to reset content and settings of simulator by clicking on the simulator tab on the top.
solution4
0 2022-05-16 09:44:54
In this case, launchd is crashing when trying to launch This could be as a result of deleting the /private/tmp folder. To resolve this go to terminal and use this command.
sudo mkdir /private/tmp
sudo chmod 1777 /private/tmp
solution5
0 2022-07-04 09:38:18
Go to About this Mac > Storage > Manage > Delete XCode Cache and all old versions of iOS. Then run again
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